Grade 3 Addition worksheets
Adding three-digit numbers, with and without regrouping.
- 3-digit addition
Related standards: 3.NBT.A.2
- 3-digit addition with regrouping
Related standards: 3.NBT.A.2
- 3-digit addition without regrouping
Related standards: 3.NBT.A.2
How the skills build
The general 3-digit addition sheet comes first, then separate sheets that force a carry (Challenge forces one in every column) or never carry.
Using these worksheets
- Warm-up
Use one Standard sheet as a ten-minute warm-up and ask children to circle each column where they regrouped.
Related standards
- 3.NBT.A.2: Fluently add and subtract within 1000.
Common Core–informed practice; not a claim of official alignment.